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wentilating.net www
ww.heatingandventilating.net Wise water
For those tasked with providing hot water to a building, striking the right balance between performance and energy expenditure is often the primary concern. Roy Marsden, product manager at Heatrae Sadia, explains how the latest in smart thermostatic technology has the potential to cut the running costs associated with hot water systems and increase safety, without the need for frequent user interactio
how the latest in T
he provision of hot water to a building falls under the remit of several different roles, ranging from contractors, to specifiers and facilities managers. Across all instances, finding an energy efficient solution remains a top priority, to ensure that the long-term costs associated with hot water are kept to a minimum.
Choosing the correct system is crucial, and there are a wide range of factors to consider in order to deliver the best performance possible, in the safest and most energy efficient way. One of the most effective ways of doing this is to look for systems which combine intelligent technology with intuitive design. By facilitating a flexible approach to water supply, the latest innovations can contribute to a reduction in user interaction, while optimising efficiency. Smart thermostatic technology: Intelligent and adaptive technology is one of the best ways to reduce the total cost of ownership of a hot water system. Smart thermostatic controls are capable of continuously monitoring usage, and within a few weeks can learn the typical patterns of a building.
Given that water demand is rarely uniform, regardless of the purpose of a building, this kind of adaptive technology is vital. By monitoring and learning the typical peaks and troughs in hot water usage, systems can adjust output accordingly, self-managing in order to maximise efficiency.
Some systems offer vacation modes. In offices, schools, and a wide range of commercial settings, premises are often unoccupied for significant lengths of time. By opting for a system which is capable of intelligently adapting to demand, such as Heatrae Sadia’s Multipoint Eco range, those tasked with delivering hot water can be confident in keeping running costs to a minimum. Usability: The usability of a system is a factor which is often overlooked, yet can have a tremendous effect on efficiency. Possessing the latest technology and energy saving functions is useless if the system is too difficult to operate, so it is vital that controls are as user-friendly as possible.
Many point-of-use water heaters now come with a variety of stylish and intuitive digital displays, which allow for easy control and temperature reading. This equips operators with the ability to implement the smart, energy saving features outlined above, as well as having the benefit of greatly reduced interaction time.
ErP rating: With so many systems on the market, the biggest and simplest differentiator can often be price. However, opting for a cheaper upfront model can often be a false economy, given the energy saving potential of the intelligent technology mentioned above.
The ErP rating of a hot water system can be an effective way to identify its efficiency credentials, and opting for an A-rated water heater will guarantee long-term savings. Rather than simply choosing the cheapest model, those tasked with delivering hot water to a building should look to specify a system with a high ErP rating.
Safety: Another factor linked with the total cost of ownership is safety. Providing a hot water supply in an energy efficient way should not come at the cost of safety, given the financial implications of something going wrong. It may seem like a cold-hearted approach, but ensuring the safety of a building’s occupants, as well as those operating the system, is an economically important consideration.
One of the hot topics in the plumbing and heating industry at the moment is a growing concern over the prevalence of Legionella. According to Public Health
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England’s latest monthly legionella report (May), there have been 110 cases of Legionnaire’s disease so far this year.
With instances of the disease on the rise, it is crucial that those involved in the delivery of water, at all stages, take action to help combat it. For facilities managers, this means opting for a water system which features the latest anti- Legionella technology.
Heatrae Sadia’s Multipoint Eco for example (pictured above), reduces the risk of development of bacteria in the water stored inside the tank through its Legionella Control System. It does this by continuously monitoring the temperature, so that whenever risk conditions are detected, such as water in the tank dropping below 600˚C for more than 21 days, the software will automatically perform a heat cycle. This raises the temperature back to 65˚C, providing a defence against the harmful bacteria.
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